Control apparatus for blowdown water



Jan. 24, 1933. I c, w, 1,895,346

CONTROL APPARATUS FOR BLOWDOWN WATER Filed July 30, 1927 Q INVENTORY WITNE$5= ATTORNEY Patented Jan. 24, 1933 ATENT oFF-IC E'T,

KHGYBJUS wrL IAM me], or tsnmm; PENNSYLVANIA Ari-Animus r iaLownowN mm v Application inea my 30, *Tliis invention is to provide a combination apparatus for limitlng the contlnuous flow of blowdown water from a boiler, and means for obtaining samples of water for testing purposes.

A- further object is to provide a device which shall include a housing or casing having a pipe connected therewith for introducing water under pressure, a pipe adapted for 0 connection with a boiler, a four-way cock adapted to control the flow of water between these pipes, and to control the flow thru a strainer and thru an adjustable element having a reduced port thru which water may pass to and thru a duct in the casing, and

With the foregoing and other objects in View, the invention consists in the novel conf struction and arrangement of elements described, illustrated and claimed,it being understood that modifications may be made within the scope of the claim without departing from the spirit of the invention.

In the drawing forming part of this application,

Figure 1 shows the device in vertical section.

Figure 2 is a view in edge elevation.

Figure 3 is a View looking from the lower side in Figure 1.

The main casing or housing is designated 10, and is provided with a bore 11 in alinement with port or bore 12, a chamber 13 being positioned between the bore and said port 12. A four-way valve or cock is designated 14,

and controls the four ports in the sleeve 15,

these ports being adapted for registration with the bores 11 and 12, and likewise with ports or bores 16 and 17. j

vtinuousvblowdown pipe, and port or channel -34 is in communication with .pipe leading "or adapted to lead to a: "point of discharge,

' for testing purposes," and for discharging, wa'ste water resulting from washing the' strainerrwith "water from pipe 18.

with an entrance port adapted to register 'with-channels' 38 and 39. The chamber 44 -has'threaded connection with plug 46 having an outer annular shoulder adapted to engage orifice 47 in axial alinement with bore .01

Water under pressure may be admitted 1m Sinial: No. 209,594."

thru 18, which pipe is in communication -with bore 12, and a pipe 19 has connection,

oris adapted to have connection, with a boileria j A chamber 20-receives a threaded plug21 having a'bore or cutaway portion 22' and a port 23 in communication with the bore 22.

;A strainer 25 positioned :in' chamber2 0' is connected with the plug at 26, and a channel 27 communicates with chamber 20, withbore 11, and with the bore27 closed by plug 28. port29 communicates with bores 11,27 and Adjacent to portion 29 is a chamber for receiving a sleeve30 providing fourports for four-way valve 31 having in the body there-' of .a bore' or channel providing ports as shown." A bore'32'is in communication with pipe 33 adapted to connect withamain confor drawing ofi a sample ofblowdown water v Withinthecasing or housing 10 is a channel 38'extending in the direction or-directions shown and adapted to communicate with one of the. ports of sleeve30. This channel 38; is

in alinement with port 39 closed by plug 40.

vA main plug 42'having an outer angular portion is provided with a chamber 44 and theaend of plug 42, and'having a bore or channel' 48, so that when plug 42 is in a given position, there is a continuous passage between chamber 20 containing the strainer, and thence thru the element justdesoribed to I channel 38. 2 i T a The plug 46 and the walls of the bore 47 thereof are subject to considerable wear on account-10f the high velocity of the blowdown water jtherethru, and this plug and plug 21 are positioned to permit of their easy renewahthe plugs being of any suitable ma- 1100 port or ports, thru va1ve.1.4 channell 1, chanterial especially adapted to resist the wear referred to. I I The device thus constructed is adapted to Wash pipe 19 back to the boiler by passing Water from pipe 18 thru valve 14, correctly positioned for that purpose, and thru port 16, and .for washing outstrainer by passing water from pipe 18, wailve14, positioned for that purpose, thru port 17, port 23 in plug 21, strainer 25, channel 27 port 29, thru valve 7 31 to port 34 and pipe 35. The device is *iurther adapted for directing theflownf blow.- doWn water from pipe '19 thru the adjacent nel 27 chamber 20, strainer 25, port 23, an-

randithencezthruzpont14-5 vofgplugLQ,ziiiirtum) an- 111651538, valve-3.1,ipipe 33,Vto.a main continuous blowdown pipe, assumed to be employeddn ithe iinstallation. Water foritesting's'purposes may be drawn 1otf;at.3v5,:by passing blow'down :Water from pipe :19 :thruilfi, rvalvie 14, chanchamber last named, said third chamber hav- 1 ing communication with the channels and munication with the plurality of inlet connec-o in either direction, *through the ,strainer,-.

thereby efiecting straining or strainer -cleaningac'tiorn,"and arported and adjustable plug mounting thestrainerr -In testimony whereof I affix my signature. 03mins .avM menees inellll, .port Z29,ahru valve '31,.correct1y2posiationed for that purpose to portrorrchanneb'34: =and;pipe 35. v

Theifilterediblovvi vdown vtatercambe used I .for any purpose for *WlIlQhiit i's'=su'i'table, de-

pendingupon the character of the waterisupplied 'to the plant, :on ithecondition of the .zboilers, and con :the care exercised in :the use 10f the present apparatus. Use !therefore includes flushing in :general, flushing for vcleaniing any one of-a battery of 'boi lers xwith 'he at- :ed andtfiltered water vfromi-th'e :m'ai'n b110W-' :down pipe, wvithoutldrawingon the "main zsupply and when the Ffiltered water is surficiently pure it :can be returned :tofthe feed Whether fluid i'sbeing admitted lfromihe boil- :dolwn'ipiipe through valve 31, duct .38, and

lil urtheiucontrol of thewpressure eifected 39y adjusting itheiposition of plugs 21, '42, :and they :are :thus cap able toflfunctioning asvalves.

Moreover, strainersof different surface (ex- :tent or mesh roan be employed. as occasion ire- ;quiresyand they can beireadilyremovedfor cleaning and replaced. :(Ellhe port "of :either ievzfpth'ese plugs Wdllibe partly cut crff'uponrout- Ward movement :ofthe plug, andnnd'er :one

10f the conditions of :use heretofore specified, "the inlet for the strainer 'is :through *the valve sports) "Either filtered or unfiltered water can he drawn-off at435 foritesting purposes;

Having described the invention what is ;claimed isr:-

In a 'device-ofthe class described, a housing having a plurality :of inlet conn'ections and Loutlet connections and having "channels afior thepassageoffiuid, said 'housinghaving valve chambers, one achamber-ibeing in com- 

